Severe computer problem

Yesterday I accidentally downloaded and ran a virus on my Windows Vista 64x that has made my computer completely useless. When it ran, my computer immediately restart, and now windows fails to start and instead shows a blue screen that mentions a memory dump for a few seconds, then turns off. When I try to run windows in safemode, or try to use system restore, windows will show a login screen with the only username as "Other" and I cant log on. I don't really know how to deal with viruses/malware aside from the typical scan and removal process, and have no idea how to go about fixing this. I would really appreciate any help.

Thanks

Edited by Orange Blossom, 08 March 2011 - 06:22 PM.
Moved to AII for initial assistance. ~ OB

Hello, and sorry for the delay.

We Need to Diagnose Your BlueScreen

• When you boot your machine, press F8 to list the startup options, exactly as you would if you were trying to enter Safe Mode
• Select "Disable Automatic Restart on System Failure", as shown here:
  
• When your system BSODs, write down the STOP error code, as well as any written out error message back here. The STOP error will always appear, but the message may not. You are looking for this:
  

Please post me the error(s).